Nearly full coverage testing effort

[daquinteroflex]

It'd be good for someone new to spend some time increasing our test coverage up to 100%.

[momchil-flex]

I don't disagree with this but I think there's some small percentage of lines that are just fine to leave untested, or rather it's much more impactful to improve the testing of the already covered code rather than to aim for 100% coverage. :)

[daquinteroflex]

So it's more I noticed there are somefiles that have like <50% coverage so maybe just bumping that up a bit more would be good?

[momchil-flex]

Yeah agreed I think finding files with poor coverage is important.

[tylerflex]

potentially relevant open issues
#709
#1349
#1800